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Unable to read the map SD Data

Discussion in 'Gen 4 Prius Audio and Electronics' started by PriusRos, Oct 16, 2023.

  1. PriusRos

    PriusRos A Fairly Senior Member - 2016 Prius Owner

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    My navigation system on my 2016 Prius has stopped working. When I turn on the car, the map will usually come on screen for a couple of seconds, then the following message is displayed:

    Unable to read the map SD Data.
    Check the map SD.
    If necessary, consult your dealer.
    It had been doing this on and off for a number of months but would usually come back on when I restarted the car and stay on. Now the map is gone completely.

    I've removed the SD card, cleaned the contacts, and reinserted it. Doesn't make any difference. I think I bought the SD card in 2020 and it had a 2019 map.

    My question is, does this error look like it's just a problem with the SD card that an updated map would fix, or could it be a problem with the card reader?

    Thanks for any insights/experiences with this problem.
     
  2. sylvaing

    sylvaing Active Member

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    Did you throw away the old card? If not, try it and see if it works.
     
  3. PriusRos

    PriusRos A Fairly Senior Member - 2016 Prius Owner

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    I probably didn't throw it away because I tend to keep everything, but I don't know if I'll be able to find it! Good idea though.
     
  4. PriusRos

    PriusRos A Fairly Senior Member - 2016 Prius Owner

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    Update:
    I called my local Toyota dealer and asked whether this message indicates a bad SD card or something more serious. He told me I would need to bring it in so they can check it out. When asked how much that would cost, he said the diagnostic check is $150. Well, my map needed updating anyway, so I might as well try installing a new map first to see if the problem is fixed, so called the parts department to ask how much the updated map costs. He told me $150. I asked for the serial number, went on Amazon and bought it for $26. Popped out the old SD card and put the new one in. The new map came up immediately and has been working ever since. :LOL:
     
  5. PriusRos

    PriusRos A Fairly Senior Member - 2016 Prius Owner

    Joined:
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    Location:
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    Vehicle:
    2016 Prius
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    Four
    Update:
    I called my local Toyota dealer and asked whether this message indicates a bad SD card or something more serious. He told me I would need to bring it in so they can check it out. When asked how much that would cost, he said the diagnostic check is $150. Well, my map needed updating anyway, so I might as well try installing a new map first to see if the problem is fixed, so called the parts department to ask how much the updated map costs. He told me $150. I asked for the serial number, went on Amazon and bought it for $26. Popped out the old SD card and put the new one in. The new map came up immediately and has been working ever since. :LOL:
     
    sylvaing likes this.
  6. PriusRos

    PriusRos A Fairly Senior Member - 2016 Prius Owner

    Joined:
    Jun 22, 2006
    1,973
    217
    0
    Location:
    Rockville, MD
    Vehicle:
    2016 Prius
    Model:
    Four
    Update:
    I called my local Toyota dealer and asked whether this message indicates a bad SD card or something more serious. He told me I would need to bring it in so they can check it out. When asked how much that would cost, he said the diagnostic check is $150. Well, my map needed updating anyway, so I might as well try installing a new map first to see if the problem is fixed, so called the parts department to ask how much the updated map costs. He told me $150. I asked for the serial number, went on Amazon and bought it for $26. Popped out the old SD card and put the new one in. The new map came up immediately and has been working ever since. :LOL:
     
    bisco likes this.
  7. PriusRos

    PriusRos A Fairly Senior Member - 2016 Prius Owner

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    Location:
    Rockville, MD
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    2016 Prius
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    Four
    Sorry about the repeat replies. I don't know how to delete all the duplicates.
     
    bisco likes this.
  8. bisco

    bisco cookie crumbler

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    congrats!